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179. Four distinct integers are chosen r..-阿摩線上測驗
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179. Four distinct integers are chosen randomly and without replacement from the first twelve
positive integers. Let X be the random variable representing the second largest of the
four selected integers, and let p be the probability function for X.
Determine p(x), for integer values of x, where p(x) ＞ 0.
(A) 
(B) 
(C) 
(D) 
(E) 